Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1991-02-15
1992-10-06
Rosenbaum, C. Fred
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
606185, A61M 5178
Patent
active
051527545
ABSTRACT:
A trocar for placement in the lumen of a cannula to facilitate inserting the cannula through the wall of a body cavity, the trocar comprising an obturator with a point for piercing the wall of the body cavity, and a protective sleeve mounted concentrically around the obturator. The obturator retracts proximally relative to the protective sleeve after the trocar point has penetrated through the wall of the body cavity. The protective sleeve is mounted for axial movement relative to the obturator, retracting proximally in response to drag from the wall of the body cavity as the trocar is advanced through the wall, and advancing distally after the cannula has penetrated through the wall, reducing the drag on the sleeve. The distal advancement of the sleeve triggers the retraction of the obturator.
REFERENCES:
patent: 1527291 (1925-02-01), Zorraquin
patent: 2001638 (1935-05-01), Tornsjo
patent: 2623521 (1952-12-01), Shaw
patent: 2630803 (1953-03-01), Baran
patent: 3713447 (1973-01-01), Adair
patent: 3774604 (1973-11-01), Danielsson
patent: 3789852 (1974-02-01), Kim et al.
patent: 4168699 (1979-09-01), Hauser
patent: 4177814 (1979-12-01), Knepshield et al.
patent: 4190048 (1980-02-01), Sampson
patent: 4403617 (1983-09-01), Tretinyak
patent: 4431426 (1984-02-01), Groshong et al.
patent: 4535773 (1985-08-01), Yoon
patent: 4601710 (1986-07-01), Moll
patent: 4617929 (1986-10-01), Gill
patent: 4617933 (1986-10-01), Hasson
patent: 4654030 (1987-03-01), Moll et al.
patent: 4747831 (1988-05-01), Kulli
patent: 4808168 (1989-02-01), Warring et al.
patent: 4813426 (1989-03-01), Haber et al.
patent: 4902280 (1990-02-01), Lander
patent: 4906236 (1990-03-01), Alberts et al.
patent: 4922602 (1990-05-01), Mehl
patent: 4931042 (1990-06-01), Holmes et al.
patent: 4952207 (1990-08-01), Lemieux
patent: 5030206 (1991-07-01), Lander
patent: 5066288 (1991-11-01), Deniega et al.
patent: 5104382 (1992-04-01), Brinkerhoff et al.
patent: 5114407 (1992-05-01), Burbank
patent: 5116353 (1992-05-01), Green
"The Source of laparoscopic innovation", by Origin Medsystems, Inc., Four (4) Pages, dated 1992.
Barker John M.
Plyley Alan K.
Redmond Russell J.
Vidal Claude
Griswold Gary L.
Hohenshell Jeffrey J.
Kirn Walter N.
Mendez M.
Minnesota Mining and Manufacturing Company
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